Troy,
> I have been wondering if an over voltage protection circuit is widely used
> in the Europa community.
I expect Nigel Charles may answer this query but there is a PFA approved mod
on the Europa Club website describing crowbar OV protection for both field
excited alternators and dynamos. Both are treated differently.
> I have been recently reading on the Aeroelectric forum of the ups and
> downs of it, as well as competing designs.
The OV protection / Load Dump scenario that has been discussed on the A.E.
list for ages now pertains only to field excitable alternators and
especially to those with internal regulators. Dynamo type alternators like
the one on the Rotax don't have the same characteristics and the shorting
out to ground of the buss during an OV event does not have the same affect
on the output of the dynamo as does on the set-up with the automotive type
alternators.
As far as I can ascertain, it should be perfectly safe to use the crowbar
mod if you are using the standard Rotax alternator. I am taking the plunge
anyway.
Regs
Kingsley Hurst
Mono Classic 281 in Oz
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